US1995146A - Shedding motion - Google Patents

Description

March 19,1935. e. GOODLINE 1,995,146

SHEDDING MOTION Filed March 22, 1932 5 Sheefcs-Sheet 1 INVENTOR, Gwrqe Go clltnc,

n BY HIS ATTORNE March 19, 1935. ca. GOODLINE SHEDDING MOTION Filed March 22,- 1932 3 Sheets-Sheet 2 INVENTOR, Geor e Goodl zlne,

BY HIS ATTORNE 'March 19, 1935. G. GOODLINE SHEDDING MOTION Filed March 22, 1952 5 Sheets-Sheet s ill-III INVENTOR, enlarge Goodhlnc,

BY HIS ATTORN Patented Mar. 19,1935 I I l I UNITED; STATES, PATENT i OFFICE t I 1,995,146-v V sHEDDING MOT ON George Goodline, Pawtucket, R. L7 7 Application March 22; 1932, Serial No; 600,390

' -2 clai s.- (01. 139-74 v "The object of this invention is to improve'shedlateral disengagement from the, gear; When ding mechanism of the open-shed type for looms lverlia'rid hence shaft Sand its gears are oscilby reducing the power necessary to operate the lated the'kni-ves will obviously be given the mo]- same in effecting the shedding action; by minition ascribed to them, and in opposite directions mizing the jar, vibration and noiseincidenttosuch simultaneously. 5 operation, and especially the jar on the harness I Theharness cords 16 may extend over guides and-hence on the warp; by avoiding movement or sheaves 17 arranged in two-suitably spaced of any harness frame insuch manner that the horizontal rows on the arch 2 as usual anddown warp threads 'shifted will be shifted at one side to the harness frames or shafts A and each two of the warp more than at the other; by insuring cords for a harness frame are connected to the 10 that each. harness system will be quite stationary hook 18 of and pivoted to a yoke 19 at 19w which when at rest; and by obtaining movements of the (Fig. 5) straddles and forms a bearing for a. harness cords which shall be direct or devoid rotary gear 20'. Each such gear'meshes with a of shifting thereof" transversely of themselves; pair of upper and lower racks 21 and 22. Each suchas happens in a dobby due to the pivoting three intergeared 'e1ements202122are con'' 5 mbvementoi the cord-actuating levers. Afurfined asfa unit to a v'erticalIplane by the interther object is to provide simple and eificientmeshing portions of--21 on the one. hand and means for rotating step by. step. the cylinder of 20-22 'onthe other (Fig. 5) being received'in apattern mechanism useful'in the control of a the guideway'between two offth'e parallel bars 20 shedding mechanism. 23,0fa'grid, such bars being afiixed at their'ends 2 In the drawings, to end bars 1a of the frame andcross-bars 1b Fig.1 is a plan of the shedding mechanism; thereof, bars 23 and 1a and 1b in effect forming 2. a side elevation; parts of the'fixed'structure or frame. The racks, Figs. 3' and 4 are longitudinal vertical "secas will appear, are to be reciprocated longituditions'. on lines 3-3 and 4- 1, respectively, Fig. 1; nally, thereby to rotate and roll the gears and 25 and i hence move the two harness cords and'corre Fig. 5 is a section on line 5-5', Fig. 3. spending harn'essframe, and. to prevent unde- A suitable frame 1 is adapted to be afiixed to sirable tilting thereof there may be'otherbars '1c the arch 20f the loom frame and the sides of this and ldto guide t em. The right hand end of frame have the-horizontalupper and'lower slots" each rack 21; 22 has a hook 21a (21b)'pivote d to 30 3 in which move back and forth the upperand move in a vertical plane and adapted to catch lower knives or actuators 4 and-'5. The motion Ov th n V S'Ol a tuators 4 and hi p v y, of each such knife is oscillatory and such that thus to up the rackv Wi hi knife, h ow (here) the near ends thereof have greater ex"- pling having a depending arm 23a (24a). tent of movement than their far ends. This is In the appe ed claims I treateach frame A, 35

obtained from an oscillated shaft 6; journaled in ts C d 16 a t y 19 flfia ss; and the theframe and having fixed thereon between the, l m nt 0 effect a fl lev l and th framefsides two gears 7' and 8 (the nearer one a ks 1, 22 a pa of a l ory tem 7 of which is of the greaterdiameter)andthrough which at each side of the PiVOt-CORHBQHOII b 0 an upper and a lower pair of racks 9 and 10; the tween'the element 20 and yoke lQ isadapted' to 4 1 upper pair being pivoted to the ends of' knife abut the frame at 1a-1a to limit the movement or'actuator 4 and the lower pair to the ends of t ha n he direction inwhich it 'is knife or actuator 5 and each-rack having a pronormally u g d, S jec to ts W ht; d the jecting portion thereof at its other endpenehooks' or couplings 21a and 2111 as disconnective trated and therefore guided by a-horizontal rod coupling means. t

11 supported by and inward of the side of the At 25 is fulcrumed in the frame a series of bellframe and in effect a part of the frame (see Fig; crank controller levers26 each having a'weighted 4). At the near side of the frame 'shaftfi has horizontal arm and an upstandin a m hav afiixed thereon another gear 12- t (Fig. 2) upon two lugs 606621 ag n O e of th hook arms wh rests d it hi h e he a, rack 13 23a (24a); in such manner that the'lever tends to 50 which is reciprocated'from some going part of hold the .correspondinghook, which otherwise the loom through a bellcrank lever 14, rack 13 tends tofall into engagement with the knife, elebeing held in engagement'with this gear by a vated clear of the sameyasin Fig. 3. The hooks roller 15 journaled in the frame and peripherally are graduated in length '(Fig. 1)' for a purpose-to v groovedto receive the rackandconfine it against appear, v g 55 Each lever 26 has its horizontal arm resting on a pattern chain 27 rotating with the cylinder 28.

According as, in the known way, presence of a pin 27a of the chain under any lever 26 elevates the latter or'absence of a pin allows the lever to fall, so the corresponding hook will be in or out of position to be caught and thereupon move forward and back with the corresponding knife or actuator.

Operation.The weight of each harness frame tends to maintain the two racks 2land 22 appertaining thereto back, or against bars la (all the racks being shown back in the drawings) If as-- to any one harness frame one of its racks is pulled forward (to the right) the harness frame will be lifted, as an incident of the-lever action of the corresponding element which is here a gear and hence rolls on the two racks; if on the return of that rack the other rack is left'back the harness frame will fall, but if on such return of the first, rack the other rack is movedforward the gear 20 will remain in its forward position rolling on the two racks idly, or without linear progression in either direction, wherefore the harness frame will remain raised. '-In short, once a harness frame is raised it will be allowed to fall only when the rack which last moved forward moves back without the other rack being moved forward. The calling of the racks is done by the controller lever 26, only one such device being required for each two racks, upper and lower. That is to say, if said lever, having called one rack (i. e., permitting its hook 21a, 'or' 212) to fall and catch a knife), is allowed to return to hook-lifting position before the other knife assumes its backward limit, the harness frame will.

have been raised and immediately allowed to fall; if it remains in "calling position on one or'rnore return movements of the'knives the harness frame will correspondingly remain raised, fallingwhen the knife which last moved to the right returns with the controller lever in the hook-elevating position, or that shown. Since the knives oscillate, or at itsoutward limit each stands angularly related to its position at the inward limit, the desired convergence of the warp shed will result. In-the present case each knife is obliqueto the paths of reciprocation of the racks 21 and- 22,wherefore 'the.hooks are graduated. in length as stated.

The leverage present in the elements 20 obviously reduces very appreciably the power necessa'ry to lift the harness and appreciably reduces the jar, vibrationand noise incident to the operation; each harness-including system stands perfectly stationary when at rest because it is then supported (at la) directly by the fixed structure; and the pull on each harness cord may be exerted, as shown, in direct alinement with tion to clear the knives and is normally urged (here by gravity) to position to be caught:there-. by. vHowever, I do not wish .to be limited to this rather than the reverse condition. A novel 'feature of my invention is as follows: Since the arms or projections 23a of the hooks project transversely of the paths of movement of the hooks with their racks it is'possible to have the movement of the hooks by lever 26 depend on their said movement with the racks, rather than on movement transmitted to or permitted them by and incident to movement of said lever; in short nice timing of the lever to have it cause movement of the hooks precisely at the instant one or the other knife is back is thus avoided. The pattern cylinder 28 may be rotated-step by step in any known way, but I prefer the following means for so rotating it:

A On faces facing lengthwise of the axis of the cylinder (here the inner and outer faces of a disk 29 on its shaft portion 28a) are two equal-number sets of projections 30 and 30a in which those of each set are approximately equally spaced around-the cylinder axis and those of one set are opposite the spacesbetween those of the other. 31 is an actuator reciprocated in' anyway, as from a segment 32 oscillating with lever li,

the actuator and segment having intermeshing teeth. This actuator. has portions, as legs 31a, which straddle the shaft portion 28a (and may be guided thereby) and reach lengthwise of its reciprocating'path and are respectively provided with two actuating projections 33 and 33a which reach in opposite directions lengthwise of said shaftand are offsetfrom each otherlengthwise of said reciprocating path,'one being arranged to engage the first-named projections'(30) of the.

cylinder one after another in the movements of the actuator in one direction and the other to engage'the second-named. projections (30a) of the cylinder one after another in the movements of the actuator in the other direction,thus to rotate thecylinder step by'step. Thus, in Fig. 2, the actuator projection 33a, when the actuator last moved to the right, encountered that (rear) projection 3001. which was then in the position of theleft lower front projection 30, andturned the cylinder to therposition shown; when the actuatornow moves to the left actuator. projection 33 will encounter the right upper (front) projection 30 and turnthe cylinder the same distance as before (here a5 degrees) and in the same direction; and so on. To hold the cylinder in each'po'sition to which it is thus turned it may have the usual octagonal disk, 34 againstwhich a spring-pressed lever. 35 is held (Fig. 3).

Since the coupling changes must occur when one knife or the other is back (or at the left) the structure M -32, from the lever portion 14 of which the movement of the knives is derived, must turn the cylinderonestep on each half-cycle of its complete (back-and-forth) movement.

.Having thus fully described my invention what Iclaimis:

1. In combination, with supporting structure, a pair of backwardly and forwardly moving actuators,'a,pair of members slidable backwardly and forwardly in and having their backward movement limited bysaid structure, a floating lever operatively'connecting said members, a har ness connected tosaid lever between said members and pulling backwardly on the lever, hooks projecting forwardly from said members and re-, spectively pivoted thereto and movable in one direction to engage and in the otherto clear the respective knives andnormally urged in one direc tion, amovable hook-moving element normally urged into. the paths. of backward movement of both hooks and adapted to move the hook which is backwardlymoving clear of the corresponding engaged with the teeth of and in the guideways of two of the levers, one, from each set, a harness connected to each lever between the ends of the latter, reciprocating actuators, one for each set of racks, each rack having a coupling movable into and out of coupled relation to the corresponding actuator, and pattern-controlled means controlling the movements of the couplings.

GEORGE GOODLINE.

Images